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A biomechanical assessment of the relation between the oral implant stability at insertion and subjective bone quality assessment
Author(s) -
Alsaadi Ghada,
Quirynen Marc,
Michiels Katleen,
Jacobs Reinhilde,
Van Steenberghe Daniel
Publication year - 2007
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.2007.01047.x
Subject(s) - dentistry , quality assessment , implant , medicine , peri implantitis , quality (philosophy) , orthodontics , surgery , external quality assessment , pathology , philosophy , epistemology
Aim: The study was set to evaluate the validity of subjective jaw bone quality assessment. Materials and Methods: A total of 298 patients (198 females, mean age 56.4) were treated with oral implants at the Periodontology Department at the University Hospital of KUL. A total of 761 TiUnite™ implants have been installed. Subjective bone quality assessment was performed on radiographs and by the surgeon's tactile sensation and was compared with torque measurements. In a subset of patients, implant stability was also assessed by implant stability quotient and/or periotest values. Results: Subjective assessment of bone quality was related to the PTV, ISQ and placement torque [in the crestal, the second and the apical third (N cm)], respectively; in grade 1: −5.3, 73.3 (4.2, 9.6, 15.2), and grade 3 or 4: −1.6, 55 (3.3, 5.5, 8.4). For the surgeon's tactile sensation, a good correlation was noted for the presence of a thick cortex: −4.6, 70.3 (4.2, 9.7, 15.1), or a thin one: −0.3, 65.9 (3.6, 6.9, 10.1). For dense trabecular bone, the values were −2.8, 69.4 (4.4, 9.7,14.8), while for poor trabecular bone, the values were−1.7, 66.4 (3.6, 6.4, 9.8). Conclusions: Subjective assessment of bone quality is related to PTV, ISQ and placement torque measurements at implant insertion.